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It was reported to aesculap ag that a challenger ti-p ml-ligat.Clips 12 cartr.(part # pl579t) was used during a procedure performed on an unknown date.According to the complainant, the clips pushed among themselves during surgery.The complaint device has not been returned to the manufacturer for evaluation.No patient complications were reported as a result of the event.Although requested, additional information has not been made available.The malfunction is filed under aag reference (b)(4).Involved components: pl536r - shaft compl.D:10mm l:370mm - lot: 62463532; pl520r - challenger ti-p handle - lot: unknown.
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B5- clarification.Investigation: up to now, pl579t is not available for investigation.The products (pl536r and pl520r) arrived in a decontaminated condition.We made a visual inspection of the products, here we detected that the product is in our specifications.Batch history review: due to the fact that no lot number was provided, a review of the device history records for the complained device is not possible.The review of risk assessment revealed that the overall risk level (severity 3(5) x probability of occurrence 3(5)) according to din en iso 14971 is still acceptable.Explanation and rationale: unfortunately, due to a lack of data and without the cartridge we cannot determine the exact cause.According to the quality standard, a material defect and a production error can most probably be excluded.There is the possibility that the cartridge was engaged not completely.If the cartridge is engaged not completely or was damaged during inserting, there is an impairment of product functionality.This could led to deformed latches of the slider sheet, to wrong positioned clips and a clip jam.A clip jam could also lead to a detached cartridge.Based upon our historically grown product experience and due to different simulation regarding a cartridge which is engaged not completely, this leads to the described errors.However, due to the fact, that the cartridge was not provided, it is hardly possible to determine the exact conclusion and root cause.If further investigations are required, the cartridge should be provided for examination.Conclusion and measures / preventive measures: there is no indication for a material-, manufacturing- or design-related failure.Cartridge is not available and therefore it is hardly possible to determine an exact conclusion and root cause.A product safety case (psc) was requested.Any action regarding capa will be addressed with this case.
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